c = k (g H T' / T)1/2

Mesoscale Convective Systems are groups of thunderstorms organized by the underlying
terrain, synoptic-scale weather systems, or their interaction with each other.
Scales range from half a dozen thunderstorm cells in a line less than 50 km
long to scores of cells along synoptic-scale fronts or in some tropical super-clusters.
Strong updrafts and downdrafts on both the mesoscale and within individual thunderstorm
cells lead to heavy rain, high winds, lightning, and other forms of severe weather.
The impact of mesoscale convective systems on river-flow, ocean temperature,
global climate, and aviation are also of interest. Some of the most challenging
problems today involve the interactions between mesoscale convective systems
and the gravity waves and gravity currents they spawn.